The correct answer is Chromite.
Chromite is an iron-chromium oxide mineral that is found in igneous and metamorphic rocks. It is a major ore of chromium, which is used in a variety of industrial applications, including the production of stainless steel, alloys, and pigments.
Limestone is a sedimentary rock composed of calcium carbonate. It is a major source of lime, which is used in a variety of industrial applications, including the production of cement, steel, and paper.
Copper is a metallic element that is found in nature in its native form. It is a major conductor of electricity and heat, and is used in a variety of electrical and electronic applications.
Manganese is a metallic element that is found in nature in its native form. It is a major component of steel, and is also used in a variety of other industrial applications, including the production of batteries, ceramics, and glass.
Chromite is the only mineral listed that is found in Manipur. It is found in the state’s Imphal West district.